Incandescent-lamp-securing means.



R.' W/MORGAN, DEGD.

E. G. MORGAN, EXBOUTRIX. INGANDESGENT LAMP SECURING MEANS.

APPLICATION PILED SEPT 19, 1908 1,055,354. Patented Mar.1s,1913.

2 SHEETS-SHEET l.

R. W. MORGAN, DECD. E. G. MORGAN, EXEOUTRIX. INGANDBSCENT LAMP SBGURING MEANS.

APPLICATION FILED SEPT. 19, 1908. 1,056,354,a `Patented Mar.18,1913.

2 SHEETS-SHEET 2 lun- V/w y out in the claims.

RDBERT MRGN, @F BRXVELLE, NEW YORK; EMILY G. MRGAN XECUTRX 0F ROBERT W. MORGAN, DECEASED.

INCNZDESCENT-LAMP-SECURENG MEANS.

Specification o' Letters atent.

Patented It/lar. t8, i913.

A. pcation led September 19, 1908. Serial No. 453,72l.

To all wwm may comem.'

Be it known that El, ROBERT W7. MORGAN, a citizen of the United States, Tesldin at Bronxvillacounty of llestcliestenand tate the same ease as has formerly been the cuss tom, but to prevent 'its i'emoval without the use of some special tool oi" key.y

In caz'i'ying out the invention, l provide 'means either on the socket oi' on the lamp base which means 1n essence consist oi a spilng or its equivalent device, which will contract and hug the shell to which it is secni'ed, upon the rotation of the lamp when the same is seing inseited, but which will expand oi' los displaced Awhen lamp is Teveiseiy rotated as when it is being removed.

En ceirying out my invention, il prefei to maite use of a spival spring fastenefi et one en@ like e. helical clutch, and tee at the otliei end, and i p'ovide a key to gasp the iee end to Tende-f the clutch-like opesation m7. when spring is secured. to the lamp base, it is scented neat tlie top thereof, anni its caiiss to extend clownwaidljy neat` the siti-Tt of te socket shell, so that. a tool oi key maj; los causen?, to gzasp this and of the spying; and tiie tool apos its imitation, rotate the spying, cause it ty tigiitly, and thusotate the and permit it to be enioveol. Tfr/'lieti spring instead of being secos/eti to tlie loose, is secos-eti to the socket, l pioviflc ineens to allow a key to expand the spring to casse it to img the intarsio? walt of the shell, so that the lamp may lne untlxreaefl so long as spsizie is held in this position, out not lielcl mere rotation ot the will cause the spring to more anrl more ti@ l* p :'oase, and prevent its iemova ordinati? function of a spiin clutch.

'lll-1e scopeoi my l i o nog tice oase Inl the ecco v nyiig cl'awiiigs is a side elevi ion lomp and socl' lion, with tlie iei Fig. 2 is a perspective view of the key. Fig. 3 is a sectional side elevation of part of the lamp socket enlarged and a side ele.- vation ot the base, partly broken away. Fig. i is a sectional view in plan on line Fig. 8, showingr the lamp with its spring gripping the shell of the socket, so that upon the rotation of the lamp the gripping effect will be increased. Fig. 5 is a view similar to Fig. 4, but showing the position o' the knife edge of the spring, when the same has been moved in the direction of the arrow to permit the removal of the lamp by a contraction ot the spring. Fig. 6 is a view of the inodied construction of lamp base, showing' a collar instead of knife edge tot the fiee terminal of tahe spving. Fig. 7 is a sectional plan view on line 7*-5?, Fig. 6. Fig. 8 shows a Emp base quite simile-i to the lamp base of 3, but. wittiawai'd projecting the knife enige. Fig. 9 is a section on line 9-9 Fig., 8. Fig. 10 is a perspective view of the key for use in the clevice of Finis. 8 and 9. Fig'. il is a sectioiial side elevation in section of a socket providefi with, my impiovecl clutch device. i2 is sectional plan view of the seid socket of 11 on line ile-11 tlieieof. Fig. 13 is a perspective view ot the Etsy for use with the device Figs. 11

fis shown in Figs. l to 5 inclusive, the .mp ieceptacle ozsocket S iscomposefl ot usual outside shell l, :intl inside seit/ew .-lizeacleol socket oi stell 2, and tiie other and noinial patas oit the lamp socket not shown. in detail` in these op, Tes. Tice is provided with a lsase 3, pteiiemlilv tliieacleol estetici1 costosi", lont o' less its ,greatest wis-tn than the est diameter of the shell 2 otl 'the socket. A spiel Tino' ci'eerably of opting ioiass Tt of the lamp end is cut-'veci reveisely itself, and piovidecl with a lin 'e iicfzi vfien the base isvii'i 'ilie ll, will loe adjacent 'to the lowes" e of s .2. It. key 7 'ozmecl Witt I. lv ,ned iecess S in its netto-l, anzi with e et, connected on a suitable cut-ve vitli esti, is atlante@ to los passed avoit the sg, shown in slotte@ lines on Fig., so

recess 8 caosetl to e ering shell, and means for engaging the free end 'of the helical spring to control the same.

G. In combination with a lamp socket and its protective covering shell, a lamp adapted to be inserted therein by a threading mot-ion,

7. In combination with a lamp socket, a

covering shell therefor, a lamp adapted to be inserted therein by a threading motion, said lamp having a base, a helical spring secured at one end to the base, but free at the other end, said spring, when the lam is in place, covered by said shell, a key a apted to enage the end of the helical spring, said key having a V shaped recess, and said free end of the sprin having a knife edge.

8. In com ination `with a lamp socket, a lamp adapted to be inserted therein by a threading motion, said lamp having a base, a helical spring secured at one end to the base, but free at the other end, a key adapted to engage the end of 4the helical spring, a Ward adapted to protect against tampering with the free end of the spring.

9. The herein described electrical lamp, comprising a. bulb, a filament, terminals, a base, a helical spring upon that part of the base which is adapted to enter and be covered by the socket When the lamp is in place, the spring being secured at one end to the base, but freeat its otherend. p

10. The herein described electrical lamp comprising a-bu1b, terminals, a tilament-,a base, a helical'spring upon that part of the base which is adapted to enter and be covered by the socket When the lamp is in place, the spring being secured at one end to the base, but free at its other end, and a key adapted-to be inserted between the base and the socket shell to engage the free end of the spring as and for the urposes described.

Signed at New Yor city this 18th day of September 1908.

ROBERT W. MORGAN. Witnesses:

EDWARD A. J Anvis, MAY WALLACE. 

